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They don't always get top billing, but it's the four-legged stars who often steal the show.

Jim

(Credit: CBS / Ron P. Jaffe)

Not since Eddie on "Frasier" has a dog stolen as many scenes as Jim, a Brussels griffon, does on CBS' "Mike & Molly."

Eddie

(Credit: NBC)

Played by Moose the Jack Russell terrier, super-smart Eddie was a great foil to the uptight title character, played by Kelsey Grammer, on the long-running NBC sitcom "Frasier."

Stan

(Credit: Disney Channel / Tony Rivetti)

As voiced by actor-comedian Stephen Full, Stan, the star of "Dog with a Blog," is hilariously deadpan and, often, quite wise as he guides those humans who can hear him talk (the kids) in the sitcom that debuted in 2012.

Flash

(Credit: CMT)

Sheriff Roscoe P. Coltrane was rarely without trusty companion Flash the basset hound on CBS' "The Dukes of Hazzard."

Lassie

(Credit: Handout)

Lassie the majestic, and so very helpful, collie has popped up in a variety of media, including books and film, but it was the popular dramatic TV show on CBS, from 1954 to the early 1970s, that made the pooch a household name.

Wishbone

(Credit: Big Feats Entertainment)

Wishbone, PBS' literature-loving Jack Russell terrier, imagined himself as a number of characters from famous stories. He embodied Ichabod Crane for "Halloween Hound: The Legend of the Creepy Collars," based on Washington Irving's "The Legend of Sleepy Hollow."